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The Spatial Analysis and Environmental Evaluation of Natural Events in Valley- Mountainous Cities (Case Study: Sardasht City)

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Abstract (2. Language): 
The nature, in spite of its own resistance and resistance and strength, is considered as one of the most sensitive and fragile ecosystems in the world. A large part of Iran is mountainous. Natural calamities are the dangers which always threaten these mountainous areas, and the occurrence of these dangers imposes considerable damages to human societies. Sardasht City in East Azerbaijan is one of the regions which due to specific Geological, topographical, and climatic conditions along with human factors is considered as an area susceptible to the occurrence of natural events. The objective of the present study is to conduct a spatial analysis of the conditions of the resistance of Sardasht against natural calamities (flood and earthquake). To obtain this aim, the 1100000 map of geology was used and the score of each of indices (fault, waterways, and heights) were determined and their risky areas in the scope of the city were identified. The results of this research indicate this issue that Sardasht is located at rank 1 in terms of 0-100 m distance from the fault line, at rank 2 in terms of 100-200 m distance from waterways, and rank 2 in terms of the height of 300- 1500 m above sea level.
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